Differential ID Chart

Differential Identification

AMC / Jeep (early)

Model 20

Ring Gear Diameter: 8.875¡±

Pinion Diameter / Spline: 1.625¡± / 28

Ring Gear Bolts: (8) 7/16¡±x20

Cover Bolts: 12

Carrier Breaks: 2.76 / 3.07

Model 35

Ring Gear Diameter: 7.562¡±

Pinion Diameter / Spline: 1.406¡° / 26

Ring Gear Bolts: (8) 7/16¡±x20 RH

Cover Bolts: 10

Chrysler / Dodge / Jeep (late) / Plymouth / Ram

Chrysler 7.25"

Ring Gear Diameter: 7.25"

Pinion Diameter / Spline: 1.375" / 27

Ring Gear Bolts: (10) 3/8"x24 LH

Cover Bolts: 9 or 10

Carrier Breaks: 2.47 / 2.76

Chrysler 8.0" -Front -'00+ Dakota, Durango; 02+ 1500

Ring Gear Diameter: 8.0"

Pinion Diameter / Spline: 1.406" / 26

Ring Gear Bolts: (10) 3/8"x24 LH

Cover Bolts: 10

Carrier Breaks: None

Chrysler / Jeep 8.25" & 8.375"

Ring Gear Diameter: 8.25"

Pinion Diameter / Spline: 1.626" / 27

Ring Gear Bolts: (10) 3/8"x24 ('04 and Earlier )

Ring Gear Bolts: (10) 10mmx1.0 ('05 and Later )

Cover Bolts: (10) '04 & Earlier; (12) '05 & Later

Carrier Breaks: 2.45 / 2.56

Chrysler 8.75" - Early 742 Case

Ring Gear Diameter: 8.75"

Pinion Diameter / Spline: 1.750" / 10

Ring Gear Bolts: (12) 3/8"x24 LH

Cover Bolts: Dropout

Carrier Breaks: None

Chrysler 8.75" - Early 741 Case

Ring Gear Diameter: 8.75"

Pinion Diameter / Spline: 1.375" / 29

Ring Gear Bolts: (12) 3/8"x24 LH

Cover Bolts: Dropout

Carrier Breaks: None

Chrysler 8.75" - Late 489 Case

Ring Gear Diameter: 8.75"

Pinion Diameter / Spline: 1.875" / 29

Ring Gear Bolts: (12) 3/8"x24 LH

Cover Bolts: Dropout

Carrier Breaks: None

Chrysler 9.25" - Rear

Ring Gear Diameter: 9.25"

Pinion Diameter / Spline: 1.875" / 29

Ring Gear Bolts: (12) 7/16"x18 ('10 and Earlier )

Ring Gear Bolts: (12) 14mmx1.0 ('11 and Later )

Cover Bolts: 12

Carrier Breaks: None

Chrysler 10.5" (AAM) - 2003 & newer RAM 2500 - 3500

Ring Gear Diameter: 10.5"

Pinion Diameter / Spline: 1.750" / 30

Ring Gear Bolts: (12) 14mmx1.5 LH

Cover Bolts: 14

Carrier Breaks: None

Chrysler 9.25¡± (AAM) - Front - 2003 & up 3/4 and 1-Ton

Ring Gear Diameter: 9.25¡±

Pinion Diameter / Spline: 1.875¡± / 30

Ring Gear Bolts: (12) 12mm x 1.5 RH

Cover Bolts: 14

Carrier Breaks: None

Chrysler 11.5" (AAM) - 2003 & newer RAM 3500

Ring Gear Diameter: 11.5"

Pinion Diameter / Spline: 2.0" / 30

Ring Gear Bolts: (12) 14mmx1.5 LH

Cover Bolts: 14

Carrier Breaks: None

Dana

Dana 30 - Standard, Reverse Rotation, CS & TJ

Dana 30 - JK

Ring Gear Diameter: 7.20" / 181mm

Pinion Diameter / Spline: 1.375" / 26

Ring Gear Bolts: (10) 3/8"x24 RH

Cover Bolts: 10

Carrier Breaks: 3.54 / 3.73

Dana Super 30

Ring Gear Diameter: 7.33" / 186mm

Pinion Diameter / Spline: 1.625" / 24

Ring Gear Bolts: (10) 7/16" or 1/2"x20

Cover Bolts: 10

Carrier Breaks: 3.54 / 3.73

Dana 35

Ring Gear Diameter: 7.33" / 186mm

Pinion Diameter / Spline: 1.375" / 26

Ring Gear Bolts: (10) 3/8"x24 RH

Cover Bolts: 10

Carrier Breaks: 3.54 / 3.73

Dana 44 - Standard & Reverse Rotation

Ring Gear Diameter: 7.562"

Pinion Diameter / Spline: 1.376" / 26

Ring Gear Bolts: (8) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: 2.35 /2.73 / 3.54

Dana 44HD - Corvette, Viper, Grand Cherokee

Ring Gear Diameter: 8.5" / 216mm

Pinion Diameter / Spline: 1.375" / 26

Ring Gear Bolts: (10) 3/8"x24 or 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: 3.73 / 3.92

Dana 44 - JK Rubicon Front

Ring Gear Diameter: 8.5" / 216mm

Pinion Diameter / Spline: 1.625" / 29

Ring Gear Bolts: (10) 3/8"x24 or 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: None

Dana 44 - JK Rear

Ring Gear Diameter: 8.5" / 216mm

Pinion Diameter / Spline: 1.625" / 24

Ring Gear Bolts: (10) 7/16" or 1/2"x20 RH

Cover Bolts: 10

Carrier Breaks: 3.73 / 3.92

Dana 50 - Ford Front

Ring Gear Diameter: 8.89" / 226mm

Pinion Diameter / Spline: 1.625" / 24

Ring Gear Bolts: (10) 7/16"x20 or 1/2"x20 RH

Cover Bolts: 10

Carrier Breaks: None

Dana 60 - Standard or Reverse Rotation

Ring Gear Diameter: 9" / 229mm

Pinion Diameter / Spline: 1.375" / 26

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: None

Dana 70

Ring Gear Diameter: 9.75" / 248mm

Pinion Diameter / Spline: 1.625" / 29

Ring Gear Bolts: (12) 1/2"x18 RH

Cover Bolts: 10

Carrier Breaks: 4.10 / 4.56

Dana 80

Ring Gear Diameter: 10.5"

Pinion Diameter / Spline: 1.750" / 29

Ring Gear Bolts: (12) 1/2"x18 RH

Cover Bolts: 10

Carrier Breaks: 4.10 / 4.56

Ring Gear Diameter: 11.25"

Pinion Diameter / Spline: 2.0" / 37

Ring Gear Bolts: (12) 9/16"x18 RH

Cover Bolts: 10

Carrier Breaks: 3.73 / 4.10

Ford

Ford 7.5"

Ring Gear Diameter: 7.5"

Pinion Diameter / Spline: 1.625" / 28

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: None

Ford 8"

Ring Gear Diameter: 8.0"

Pinion Diameter / Spline: 1.188" / 25

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: Dropout

Carrier Breaks: None

Ford 8.8"

Ring Gear Diameter: 8.8"

Pinion Diameter / Spline: 1.625" / 28

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: None

Ford 9.75"

Ring Gear Diameter: 9.75"

Pinion Diameter / Spline: 1.970" / 31

Ring Gear Bolts: (12) 12mm x 1.25 RH

Cover Bolts: 12

Carrier Breaks: None

Ford 9"

Ring Gear Diameter: 9.0"

Pinion Diameter / Spline: 1.312" / 28; 1.5" / 35

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: Dropout

Carrier Breaks: None

Ford 10.25" / 10.5"

Ring Gear Diameter: 10.25" / 10.5"

Pinion Diameter / Spline: 1.940" / 31 (37 - 2011 & newer)

Ring Gear Bolts: (12) 1/2"x20 RH

Cover Bolts: 12

Carrier Breaks: None

GM

GM 7.2" IFS

Ring Gear Diameter: 7.2"

Pinion Diameter / Spline: 1.315" / 27

Ring Gear Bolts: (10) 10mm x 1.25

Cover Bolts: N/A

Carrier Breaks: 3.08 / 3.23

GM 7.6" IFS - Front - Late Model Midsize Truck

Ring Gear Diameter: 7.625"

Pinion Diameter / Spline: 1.438" / 28

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: 3.08 / 3.23

GM 7.75" (Australian - Some 3rd Gen Camaro/Firebirds)

Ring Gear Diameter: 7.75"

Pinion Diameter / Spline: 27

Ring Gear Bolts: (8)

Cover Bolts: 9

Carrier Breaks: 2.77 / 3.27

GM 8.2" - 1955-64 Car

Ring Gear Diameter: 8.20"

Pinion Diameter / Spline: 1.438" / 17

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: Dropout

Carrier Breaks: 3.70 / 4.11

GM 8.2" - 1964-72 Chevy (C-Clip Axles)

Ring Gear Diameter: 8.20"

Pinion Diameter / Spline: 1.438" / 25

Ring Gear Bolts: (10) 3/8"x24 LH

Cover Bolts: 10

Carrier Breaks: 2.76 / 3.07

GM 7.5" & 7.625"

Ring Gear Diameter: 7.5"

Pinion Diameter / Spline: 1.438" / 27

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: 10

Carrier Breaks: 3.08 / 3.23

GM 7.6" IRS (Late Camaro V6)

Ring Gear Diameter: 7.6" / 193mm

Pinion Diameter / Spline: 1.438" / 27

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 10

Carrier Breaks: None

GM 8.0" - Rear - Late Model Midsize Truck

Ring Gear Diameter: 8.0"

Pinion Diameter / Spline: 1.781" / 27

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: 10

Carrier Breaks: None

GM 9.375" - 1955-62 Truck

Ring Gear Diameter: 9.375"

Pinion Diameter / Spline: 1.438" / 17

Ring Gear Bolts: (12) 3/8"x24 RH

Cover Bolts: 12

Carrier Breaks: None

GM 8.2"BOP - 1964-72 (Bolt-in Axles)

Ring Gear Diameter: 8.20"

Pinion Diameter / Spline: 1.438" / 27

Ring Gear Bolts: (10) 3/8"x24 LH

Cover Bolts: 10

Carrier Breaks: 3.23 / 3.36

GM 8.25" IFS - Late Model Full Size Truck

Ring Gear Diameter: 8.25"

Pinion Diameter / Spline: 1.625" / 30

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: N/A

Carrier Breaks: 3.23 / 3.42

GM 8.5" -1968-70 Oldsmobile 12-Bolt Cover/10-Bolt Gear

Ring Gear Diameter: 8.5"

Pinion Diameter / Spline: 1.626" / 27

Ring Gear Bolts: (10) 7/16"x20 RH

Cover Bolts: 12

Carrier Breaks:

GM 8.6" IRS (218mm, AAM) - Late Model Camaro V8

Ring Gear Diameter: 8.6" / 218mm

Pinion Diameter / Spline: 1.875" / 32

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: 10

Carrier Breaks: None

GM 8.875" - Truck 12-Bolt

Ring Gear Diameter: 8.875"

Pinion Diameter / Spline: 1.438" / 30

Ring Gear Bolts: (12) 3/8"x24 RH

Cover Bolts: 12

Carrier Breaks: 2.76 / 2.76 - 3.42 / 3.73

GM 9.25" IFS (2011 and Newer)

Ring Gear Diameter: 9.25"

Pinion Diameter / Spline: 1.875" / 30

Ring Gear Bolts: (12) 12mm x 1.5 LH

Cover Bolts: 12

Carrier Breaks: None

GM 10.5" - Truck 14-Bolt

Ring Gear Diameter: 10.5"

Pinion Diameter / Spline: 1.875" / 30

Ring Gear Bolts: (12) 12mm x 1.5 LH

Cover Bolts: 14

Carrier Breaks: None

GM 8.5" -1970-Present Car, 1977-99 Truck (C-Clip Axles)

Ring Gear Diameter: 8.5"

Pinion Diameter / Spline: 1.625" / 30

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: 10

Carrier Breaks: 2.56 / 2.73

GM 8.6" - 2000 & Newer 1/2 Ton Truck

Ring Gear Diameter: 8.6"

Pinion Diameter / Spline: 1.625" / 30

Ring Gear Bolts: (10) 7/16"x20 LH

Cover Bolts: 10

Carrier Breaks: 2.56 / 2.73

GM 8.875" - Car 12-Bolt

Ring Gear Diameter: 8.875"

Pinion Diameter / Spline: 1.625" / 30

Ring Gear Bolts: (12) 3/8"x24 RH

Cover Bolts: 12

Carrier Breaks: 2.76 / 3.08 - 3.90 / 4.10

GM 9.25" IFS (2010 and Older)

Ring Gear Diameter: 9.25"

Pinion Diameter / Spline: 1.875" / 30

Ring Gear Bolts: (12) 12mm x 1.5 LH

Cover Bolts: N/A

Carrier Breaks: None

GM 9.5" - Truck 14-Bolt

Ring Gear Diameter: 9.5"

Pinion Diameter / Spline: 1.875" / 30

Ring Gear Bolts: (12) 12mm x 1.5 LH

Cover Bolts: 14

Carrier Breaks: None

GM 11.5" - Truck 14-Bolt

Ring Gear Diameter: 11.5"

Pinion Diameter / Spline: 2.0" / 30

Ring Gear Bolts: (12) 9/16"x18 RH

Cover Bolts: 14

Carrier Breaks: 4.10 / 4.63

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